Changeable-combination lock



May 12, 1925.

. O. HAASE CHANGEABLE COMBINATION LOCK 2 Sheets-Sheet 1 Filed Aug. 12, 1924 v gwukoz Oswald Haalse o. HAASE CHANGBABLE COMBINATION LOCK May 12, 1925. I

.//////4 I25. A 7/// 7 m n? Patented May 12?, 19225.

GSTWALD Hit-ASE, 6F LA PA-Z; BOLIVIA,

CHANGEABLE-COMBINATIGN LOCK;

Application filed. August 12, 1824. Serial No. 731,626.

To (/Z! whom it may concern Be it known that l, OswALn Hausa, a citizen or" the Republic of Germany, residing at lira Par/1, Bolivia, South America, have invented iin new and useiul Improvements in Clr able-Combination Locks, ofwhlch the toll; ting a specification.

The present invention pertains to combination locks for suites, vaults and the like.

Most combination locks as heretofore constructed have the lock proper, that is, the tumblers and their associated parts, located on the inner face or" the safe door in a line with, or practically in a line with, the axis of the spindle which arojects through to the outer taco or" the door and carries the numbored revolving disk. The location of the tumblers, or in other words, the combination, is betrayed by this fact.

As the combination is thus in direct conn-c Ion with the spindle, the latter conveys to the outside of the sate certain indications to the working of the mechanism, in fact, lent to enable practiced individuals with a fine sense of touch to ascertain the combination and open the safe. It the outer numbered dish and spindle are removed, which is quite easy, and the combination forced backwards into the safe, the safe may be opened by retracting the bolts,

v experience in opening co-mliiination forgotten their cou'ibination numbers, is to devise the present device to demy own method or attack. I

the purpose of this invention to proa combination lock in which the locaion or the lock proper, i. e., the part which inciudcs the tumbler disks, is unknown to and cannot be determined by strangers withut airs-t seeing, the insine oi the safe door. in the present device the combination mechsates oi the described and othertypes without the use of tools for owners who have 1 1. Ont Or reason of; its nature, is incapable of convey-- ing such indications. I

A further object of my inventionis the arrangement whereby the opening of the safe door is rendered impossible even vhen force is used to bore or cut out the combination disk and operating spindle, which, with my device would only serve to isolate the combination mechanism.

It is intended that my device be titted to any existing safe door or the like, without serious alterations thereto and without screws, rivets or bolts which extend to the outer side of thedoor.

A still further object is theprovision 0t means wiereby all the numbers of the com,-

bination of the lock can be altered in one operation, a convenience not found in existing; combination locks. I v

In the drawings, which represe'nt a practical embodiment of the invention and in which like reference numerals indicate the same partsthroughout the several views, Figure 1 is a rear view of a safe door showing my lock applied thereto, certain of the parts of the lock being removed or broken away inorder to clearly disclose the ction and the arrangement ofthe parts when in locked position;

1 lg. 2, a vertical sectional view taken on line '22 of Fig. 1, with all of the parts of the lock in. place and still in locked c'ondi- 7 tion;

Fig. 3, aview, similar to. Flg. 1, with the parts 111 unlocked pOSltlOII;

Fig; 4, a perspective of one of the outer tumbler disks removed from the lock as sonrbly, and a Fig. 5, a horizontal section taken on line .54) of ri 3.

Referring particularly to Fig. l, the safe door 1 is; provided with the usual knob 2 a d number dial or'face plate 3 mounted on spindle 4 in'the door, whereby the tumblers of the lock may be set into the required position; according to the combination, to per mit the retraction or bolts andfi by means of knob 7. Knob 7 is mounted on thef outer end of a spindle 8 to the inner end of which is rigidly secured a suitable upright lever 9 havingan inwardly projecting pin 10 mounted in upper end. Pin 10 projects through a vertical slot 11 provided in the horizontal bar 12 on one end of which, near the outer edge of the door 1, is rigidly mounted the uprightbar 13 carrying the on the inner face of door 1, near the outer edge thereof, are provided with perforated space sprocket wheel 23 fromlthe inner face.

projecting cars 16, and '17, respectively,

which serve as gu des for bolts 5 and 6 in their locking and unlocking movementsand also partially support this part of the lock mechanism. J

Horizontal bar 12 is provided near its upper edge with a horizontal slot 18. Suitably mounted on the inner face of door 1 is a provided on the outer end thereof and projecting inwardly through the slot 18 in member 12. Thus this end of member 12 is supported by the pin 19 on the lug 20 on which member 12 rides in locking and unlocking the lock. Member 12 is retained on pin 19 by a washer 21 and a screw 22 secured in the end of the pin. Lug 20 is of sufficient depth so that member 12 will slide freely thereon when washer 21 and, screw 22 are in place.

A sprocket wheel 23 is secured against rotation on the inner. end of spindle 4- by means of apin 2% extending through corresponding perforations in the hub 25 of the sprocket wheel 23 and the spindle 4.,

A set screw 26 extending through a threaded opening in hub25 of sprocket wheel 23 and engaging spindle 4 serves to further secure the sprocket wheel in place and prevent pin 24 from dropping out. T A ring 27 secured to the inner face of door 1. and through which spindle 41 projects serves to suitably of door 1.

Suitably mounted atits inner end on the.

' inner face of door 1 is a stub shaft or stud 28 vmovements when the lock is operated.

"segmental lever 32 on the reduced end 33' of a stub shaft or stud 341 which is suitably secured on the inner face of a door 1; A. screw 35 serves to hold lever 32 on the shaft 34: without interfering with its'oscillatory A portion of the periphery of lever 32 is provided with a groove 36 which, when the ,lock is locked serves tosnugly receive the outer end of a projection 37 provided on the inner, lower part of horizontal member 12. The lower portion of segmental lever 32 is cut away at 38 so as to provide ashoulder 39 beneath which projection 37 of member 12 may pass when lever 32 is rotated to the position shown m Fig. 3 to cause retraction pin 19 having a horizontal rib or lug 20.

of bolts 5 and 6 during the unlocking movement. Projection 37 is beveled at 10 to permit the ready'. movement of the grooved edge of lever 32 over the projection 37 as the latter is withdrawn from beneath shoulder- 39 and also to guide projection 37 beneath shoulder 39 when the parts move in the opposite directionv Stops 4:1 and 42 on the inner face of doorl serve to limit the oscillatory movements of lever 32.

Pivotally connected at one end to the lower portion of lever v32 by means of a screw 43 isja lever 44, the opposite end of which .has an outwardly projecting arm, 45

formed thereon and adapted to engage the notches in the tumbler disks when'the latter' are properly set; to permit unlocking end of shaft 28 bears againstthis hub portion and serves to hold'the sprocket wheel on the shaft. Mounted on this outer hub portion and suitably secured, as by screws,

to the outer face of sprocket wheel 30 is a 1 driving tumblerdisk 417 having a number of. threaded openings 48 therein'in one of which ismounted a screw 49 having its head projecting from the outer face'of the disk. The

disk 47 is provided on its periphery with a notch 50 having an abrupt wall 51 and a curved wall 52, the purpose of which will appear later. In Figs. 1 and 3, the remaiir ing driven tumbler disks and the associated parts are removed in order to clearly show theinnermost tumbler disk '47 just described. a

The lower sprocket wheel 30 and the tumbler disks are enclosed within a casing or box 53 suitably secured to door 1. The rear upperportiou of casing 53 cut away at 5% to provide for the passage of lever ME and sprocket chain 3 1 A lid 55 for casing 53 is attached thereto by screws 56. i

Rigidly mounted on the inner face of lid 55 is an outwardly projecting stub shaft 57. Shaft. 57 is hollow at its inner end and,

when lid 55 is in place, slips over the outer hub portion of sprocket wheel 30 which serves as a support for the outer end of the shaft Mounted to freely rotate on stub shafts 7 are a number of driven tumbler disks of practically the same construction. as driving tumbler disk 47.

projecting from the outer-face of the disk and the latter from the inner face thereof (Fig. 4). Disks 58 are separated from each other on shaft 57 and from lid 55 by means of washers 63 which latter arezkeyed to Disks58 are notched atv b9, similarly to disk 47, but are each provided wlth a greater number of threaded shaft 57 to pr ventrotation of disks 58 by frictional engagement of the parts. A split spring ring 64 mounted in a groove in the outer end of shaft 57 retains disks 58 and washers 63 on the shaft.

Operatz'mu-Jn the construction described, it is obvious that rotation of the knob 2 in either direction by the operator will cause rotation of the combination dial 3 and spin-' dle 4 in the same direction. as in the ordinary form of combination lock operating mechanism. As spindle 4 revolves, upper sprocket wheel 23 is rotated with it, thereby causing lower sprocket wheel to rotate in the same direction by means of the chain 31 connecting them. Tumbler disk 47, being connected to sprocket wheel 30, also revolves, during which movement screw or pin 49 on the outer face of disk 47 engages with pin or screw 61 on the inner face of the tumbler disk 58 adjacent disk 47, or the first driven disk. The rotation of driving tumbler disk -47 being continued by means of further op eration of knob 2 in the same direction, the first tumbler disk 58 will then be rotated therewith by reason of the engagement of pin 49 with pin 61. Rotation of the parts being continued, pin 62 on the opposite side of tumbler disk 58 will engage pin 61 on the adjacent face of the next tumbler disk 58 and so on, in the same manner, until all of the tumbler disks are picked up and rotated together. During these operations arm of lever 44 rides on the peripheries of tumbler disks 47 and 58.

The pin 49 in the tumbler disk 47 and pins (31, (S2 in tumbler disks 58 are, of course, lo cated in such of the threaded openings in the disks as will correspond with the combination to be given the lock, or vice versa, so that upon revolving knob 2 back and forth in accordance with the combination, the tun'ibler disks 47 and 58 will finally assume positions with their notches and 59 in a-lincment, as will be readily understood.

Assuming the mechanism is locked, it may be unlocked by rotatingknob 2" inaccordance with the combination. l Vhen knob 2 has been rotated next to the last time during the unlocking operation (which is a clockwise direction looking from the outside of door 1), notches 59 of tumbler disks 58 will be in alinement with each other just beneath arm of lever 44. In the final movement of tumbler disk 47. which is in a counter clockwise direction, notch 50 thereof also alines with notches 59 of disks 58 beneath arm 45,

which latter then drops by gravity into tl e V notches, since lever 44 is loosely pivoted on screw 43. The movement of tumbler disk 47 being continued in the same direction, lever 44 will be shifted to the right, as shown in Fig. 3', by reason of the engagement of arm 45 with the abrupt wall 51 of notch 50 in disk 47. As arm 45 is also in engagement with the notches of disks 58, this last mentioned movement will cause them to revolve with disk 47 to the position of the latter shown in Fig. 3. I

The movement of lever 44 to the'right, just described, causes segmental lever 32 to swing about stud 34 from its lower position against stop 42 (Fig. 1) to its upper position in front of the reduced portion 38 'of' lever 32, aided by-the beveled portion 40 of projection 37. It will thus be seen that the parts will remain in the condition shown in Fig. 3, until the bolts 5 and 6 are advanced for locking purposes, as shown in Fig. 1.

To advance the bolts'5 and 6', and lock the door 1, knob or handle 7 is turned counter-clockwise, lookingat the front of the door, whereupon the connected parts move in the opposite directionsthereby withdrawing projection 37 of member 12 from beneath shoulder 39 of segmental lever 32. Knob 2' is then revolved in a clockwise direction which, through the connected parts, causes a corresponding movement of tumbler disk 47. Since arm45- of lever '44 is still resting in the notches of the driving tumbler disk '47 disks 58, lever 44 will be shifted during this movement of disk 47 to its left-hand position (Fig. 1), and the driven tumbler disks ()8 will revolve with tumbler disk 47 by reason of the engagen'ient of arm 45 with the alnupt shoulders of the notches 58 inthese disks.

mental lever 32 is rotated thereby to its lower position against stop 42 1) the channelled peripheral portion of lever 32 engaging with the outer end of projection 37 of member 12 to prevent retraction of the bolts. Rotation of knob 2 and consequently driving tumbler 47 is continued which results in arm 45 of lever 44 riding up the curved wall 52 of the notch in disk 47 and on to the periphery thereof (Fig. 1). Continuing in its movement in the'same direction, driving tumbler disk 47 picks up the driven tumbler disks-58 one after another, as heretofore explained, until all of the tumbler disks are rotating in unison with their notchesou-t of and the driven tumbler then lever 44 shifts to the left, sag

the door 1, since themechanism may be lo-- cated in the position illustrated or at any other place on the inner face of the door, a longer chain31 being used if necessary in order to place the mechanism in a position remote from the knob 2 and spindle 4:. The

size, shape and arrangement of the bolt.

throwing mechanism may also be varied to accommodate any location of the other parts of the device.- I

It .is obvious that the entire combination of the lock may be changed in one operation simply by altering the setting of one of the sprocket wheels 23 0 :30 on its shaft. This may be readily accomplished by removing chain 31 from one of the sprocket wheels,

resetting the wheel, and: then replacing the chain. I It is. contemplated that other changes may be made, and the invention istherefore not intended to be restricted to the means shown except as limited by the appended claims.

What is claimed is:

1. Ina combination lock, the combination of an operating spindle; a sprocket wheel mounted on said spindle. for'rotation therewith; a second sprocket wheel; tumbler mechanism associatedwith and adapted to be operated by rotation of said second mentioned sprocket wheel; and a sprocket chain connecting said sprocket Wheels.

2. In a combination lock, the combination of a-sup-port; an operating spindle mounted for rotation therein; a sprocket wheel mounted on the inner end of the spindle for rotation therewith; a stud mounted on said support; a second sprocket wheel mounted for rotation on said "stud; asprocket chain connecting said sprocket wheels; and tumbler mechanism associated With and adapted to be operated by rotation of said second mentioned sprocket wheel. -7 e 3. The combination in a permutation lock of operating means comprising a spindle, an operating knob and number dial on, one end thereof, and a sprocket wheel fixedly mounted on the opposite end of'the'spindle;

tumbler mechanism; a second sprocket wheel associated with and adapted to operate said tumbler mechanism upon rotation, thereof;

and a sprocket chain connecting said sprocket Wheels. I v v 4-. In a combination lock, including an operating spindle, a number dial therefor, and a tumbler-mechanism located remotely with reference ;to said operating spindle; a

sprocket Wheel and sprocket chain driving mechanism connecting said operating spindle and sald tumbler mechanism.

5. A combination, lock comprising, in

combination, a rotativeoperating spindle; a sprocket Wheel mounted on sa d spindle for rotation therewith; a tumbler mechanism;

a secondsprocket wheel associated with and adapted to operate said tumbler mechanism upon rotation thereof; and a sprocket chain co'nnectingrsaid sprocket Wheels, the setting of said firstnnentioned sprocket wheel in its plane of'rotatio'n on the operating spindle being adapted for alteration to change the entire combinationof the lock.

wheels, the driving relation of said sprocket wheels with reference to each other being 7 adapted to be altered to change the entire combination of the lock.

7. A combination lock comprising, in combination, a safe door; an operating spindle mounted for rotation therein; a number dial mounted on one end of said spindle for rotation therewith; a sprocket wheel mountedon the opposite end of said spindle for rotation therewith; bolts mechanism for said door; bolt operating mechanism; tumbler mechanism mounted on the door remote from said operating'spindle; a second sprocket Wheel associated with and adapted upon rotation thereof to operate said tumbler mechanism; a sprocket chain connecting said sprocket Wheels; and means for preventing and permitting the actuation of the bolt operating mechanism, said means being controlled by the tumbler mechanism.

8. A combination lock comprising, in combination, a safe door; an operating spindle mounted for rotation therein; a number dial fixed on one end of said spindle; a sprocket Wheel fixed on the opposite end of said spindle; tumbler mechanism mounted on said door at a distance from the operating" spindle; a second sprocket Wheel associated .With and adapted upon rotation thereof to I name to this. specification.

OSVVALD HAASE. 

